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Author christian.heimes
Recipients Mark.Shannon, christian.heimes, jdemeyer, lukasz.langa, pablogsal, petr.viktorin, pitrou, vstinner
Date 2019-09-02.16:10:40
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1567440640.25.0.546554992993.issue38006@roundup.psfhosted.org>
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Content 
The biggest CFFI based dependency of FreeIPA is cryptography, but cryptography does not use weakref in its sources. CFFI on the other hand has a WeakValueDictionary object attached to its internal typecache backend, https://bitbucket.org/cffi/cffi/src/bf80722dea36237710083315e336c81bc8571fd0/cffi/model.py#lines-572 . Perhaps that is the culprit?

I checked the CTypeDescrObject from the stacktrace. Three out of three times it's for "unsigned long(*)(void *)". I wasn't able to get any useful information from the other fields yet.

(gdb) up 7
#7  0x00007fffe905babc in ctypedescr_dealloc (ct=0x7fffe6d958b0) at c/_cffi_backend.c:401
401             PyObject_ClearWeakRefs((PyObject *) ct);
(gdb) p (char*)ct.ct_name
$1 = 0x7fffe6d95908 "unsigned long(*)(void *)"
(gdb) p ct
$2 = (CTypeDescrObject *) 0x7fffe6d958b0
History
Date User Action Args
2019-09-02 16:10:40christian.heimessetrecipients: + christian.heimes, pitrou, vstinner, petr.viktorin, lukasz.langa, Mark.Shannon, jdemeyer, pablogsal
2019-09-02 16:10:40christian.heimessetmessageid: <1567440640.25.0.546554992993.issue38006@roundup.psfhosted.org>
2019-09-02 16:10:40christian.heimeslinkissue38006 messages
2019-09-02 16:10:40christian.heimescreate